<template>
  <div class="app-container">
    <el-form :model="queryParams" ref="queryRef" :inline="true" v-show="showSearch" label-width="68px">
      <el-form-item>
        <el-button type="primary" icon="Search" @click="handleQuery">搜索</el-button>
        <el-button icon="Refresh" @click="resetQuery">重置</el-button>
      </el-form-item>
    </el-form>

    <el-row :gutter="10" class="mb8">
      <el-col :span="1.5">
        <el-button
          type="primary"
          plain
          icon="Plus"
          @click="handleAdd"
          v-hasPermi="['question:question:add']"
        >新增</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="success"
          plain
          icon="Edit"
          :disabled="single"
          @click="handleUpdate"
          v-hasPermi="['question:question:edit']"
        >修改</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="danger"
          plain
          icon="Delete"
          :disabled="multiple"
          @click="handleDelete"
          v-hasPermi="['question:question:remove']"
        >删除</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="warning"
          plain
          icon="Download"
          @click="handleExport"
          v-hasPermi="['question:question:export']"
        >导出</el-button>
      </el-col>
      <right-toolbar v-model:showSearch="showSearch" @queryTable="getList"></right-toolbar>
    </el-row>

    <el-table v-loading="loading" :data="questionList" @selection-change="handleSelectionChange">
      <el-table-column type="selection" width="55" align="center" />
      <el-table-column label="主键" align="center" prop="id" />
      <el-table-column label="所属课程" align="center" prop="courseId" />
      <el-table-column label="题型" align="center" prop="type">
        <template #default="scope">
          <dict-tag :options="question_type" :value="scope.row.type"/>
        </template>
      </el-table-column>
      <el-table-column label="题目内容" align="center" prop="content" />
      <el-table-column label="正确答案" align="center" prop="correctAnswer" />
      <el-table-column label="题目分数" align="center" prop="score" />
      <el-table-column label="操作" align="center" class-name="small-padding fixed-width">
        <template #default="scope">
          <el-button link type="primary" icon="Edit" @click="handleUpdate(scope.row)" v-hasPermi="['question:question:edit']">修改</el-button>
          <el-button link type="primary" icon="Delete" @click="handleDelete(scope.row)" v-hasPermi="['question:question:remove']">删除</el-button>
        </template>
      </el-table-column>
    </el-table>
    
    <pagination
      v-show="total>0"
      :total="total"
      v-model:page="queryParams.pageNum"
      v-model:limit="queryParams.pageSize"
      @pagination="getList"
    />

    <!-- 添加或修改题库管理对话框 -->
    <el-dialog :title="title" v-model="open" width="500px" append-to-body>
      <el-form ref="questionRef" :model="form" :rules="rules" label-width="80px">
        <el-form-item label="所属课程" prop="courseId">
          <el-input v-model="form.courseId" placeholder="请输入所属课程" />
        </el-form-item>
        <el-form-item label="题型" prop="type">
          <el-select v-model="form.type" placeholder="请选择题型">
            <el-option
              v-for="dict in question_type"
              :key="dict.value"
              :label="dict.label"
              :value="parseInt(dict.value)"
            ></el-option>
          </el-select>
        </el-form-item>
        <el-form-item label="题目内容">
          <editor v-model="form.content" :min-height="192"/>
        </el-form-item>
        <el-form-item label="正确答案" prop="correctAnswer">
          <el-input v-model="form.correctAnswer" type="textarea" placeholder="请输入内容" />
        </el-form-item>
        <el-form-item label="题目分数" prop="score">
          <el-input v-model="form.score" placeholder="请输入题目分数" />
        </el-form-item>
        <el-divider content-position="center">题目选项信息</el-divider>
        <el-row :gutter="10" class="mb8">
          <el-col :span="1.5">
            <el-button type="primary" icon="Plus" @click="handleAddOption">添加</el-button>
          </el-col>
          <el-col :span="1.5">
            <el-button type="danger" icon="Delete" @click="handleDeleteOption">删除</el-button>
          </el-col>
        </el-row>
        <el-table :data="optionList" :row-class-name="rowOptionIndex" @selection-change="handleOptionSelectionChange" ref="option">
          <el-table-column type="selection" width="50" align="center" />
          <el-table-column label="序号" align="center" prop="index" width="50"/>
          <el-table-column label="选项编号" prop="label" width="150">
            <template #default="scope">
              <el-input v-model="scope.row.label" placeholder="请输入选项编号" />
            </template>
          </el-table-column>
          <el-table-column label="选项内容" prop="content" width="150">
            <template #default="scope">
              <el-input v-model="scope.row.content" placeholder="请输入选项内容" />
            </template>
          </el-table-column>
        </el-table>
      </el-form>
      <template #footer>
        <div class="dialog-footer">
          <el-button type="primary" @click="submitForm">确 定</el-button>
          <el-button @click="cancel">取 消</el-button>
        </div>
      </template>
    </el-dialog>
  </div>
</template>

<script setup name="Question">
import { listQuestion, getQuestion, delQuestion, addQuestion, updateQuestion } from "@/api/question/question"

const { proxy } = getCurrentInstance()
const { question_type } = proxy.useDict('question_type')

const questionList = ref([])
const optionList = ref([])
const open = ref(false)
const loading = ref(true)
const showSearch = ref(true)
const ids = ref([])
const checkedOption = ref([])
const single = ref(true)
const multiple = ref(true)
const total = ref(0)
const title = ref("")

const data = reactive({
  form: {},
  queryParams: {
    pageNum: 1,
    pageSize: 10,
    content: null,
  },
  rules: {
    courseId: [
      { required: true, message: "所属课程不能为空", trigger: "blur" }
    ],
    type: [
      { required: true, message: "题型不能为空", trigger: "change" }
    ],
    content: [
      { required: true, message: "题目内容不能为空", trigger: "blur" }
    ],
    correctAnswer: [
      { required: true, message: "正确答案不能为空", trigger: "blur" }
    ],
    score: [
      { required: true, message: "题目分数不能为空", trigger: "blur" }
    ],
  }
})

const { queryParams, form, rules } = toRefs(data)

/** 查询题库管理列表 */
function getList() {
  loading.value = true
  listQuestion(queryParams.value).then(response => {
    questionList.value = response.rows
    total.value = response.total
    loading.value = false
  })
}

// 取消按钮
function cancel() {
  open.value = false
  reset()
}

// 表单重置
function reset() {
  form.value = {
    id: null,
    courseId: null,
    type: null,
    content: null,
    correctAnswer: null,
    score: null,
    createTime: null,
    updateTime: null
  }
  optionList.value = []
  proxy.resetForm("questionRef")
}

/** 搜索按钮操作 */
function handleQuery() {
  queryParams.value.pageNum = 1
  getList()
}

/** 重置按钮操作 */
function resetQuery() {
  proxy.resetForm("queryRef")
  handleQuery()
}

// 多选框选中数据
function handleSelectionChange(selection) {
  ids.value = selection.map(item => item.id)
  single.value = selection.length != 1
  multiple.value = !selection.length
}

/** 新增按钮操作 */
function handleAdd() {
  reset()
  open.value = true
  title.value = "添加题库管理"
}

/** 修改按钮操作 */
function handleUpdate(row) {
  reset()
  const _id = row.id || ids.value
  getQuestion(_id).then(response => {
    form.value = response.data
    optionList.value = response.data.optionList
    open.value = true
    title.value = "修改题库管理"
  })
}

/** 提交按钮 */
function submitForm() {
  proxy.$refs["questionRef"].validate(valid => {
    if (valid) {
      form.value.optionList = optionList.value
      if (form.value.id != null) {
        updateQuestion(form.value).then(response => {
          proxy.$modal.msgSuccess("修改成功")
          open.value = false
          getList()
        })
      } else {
        addQuestion(form.value).then(response => {
          proxy.$modal.msgSuccess("新增成功")
          open.value = false
          getList()
        })
      }
    }
  })
}

/** 删除按钮操作 */
function handleDelete(row) {
  const _ids = row.id || ids.value
  proxy.$modal.confirm('是否确认删除题库管理编号为"' + _ids + '"的数据项？').then(function() {
    return delQuestion(_ids)
  }).then(() => {
    getList()
    proxy.$modal.msgSuccess("删除成功")
  }).catch(() => {})
}

/** 题目选项序号 */
function rowOptionIndex({ row, rowIndex }) {
  row.index = rowIndex + 1
}

/** 题目选项添加按钮操作 */
function handleAddOption() {
  let obj = {}
  obj.label = ""
  obj.content = ""
  optionList.value.push(obj)
}

/** 题目选项删除按钮操作 */
function handleDeleteOption() {
  if (checkedOption.value.length == 0) {
    proxy.$modal.msgError("请先选择要删除的题目选项数据")
  } else {
    const options = optionList.value
    const checkedOptions = checkedOption.value
    optionList.value = options.filter(function(item) {
      return checkedOptions.indexOf(item.index) == -1
    })
  }
}

/** 复选框选中数据 */
function handleOptionSelectionChange(selection) {
  checkedOption.value = selection.map(item => item.index)
}

/** 导出按钮操作 */
function handleExport() {
  proxy.download('question/question/export', {
    ...queryParams.value
  }, `question_${new Date().getTime()}.xlsx`)
}

getList()
</script>
